Research of Concrete Cracking Resistance Technology for High Speed Railway CRTS Ⅰ Double Block Ballastless Track
According to the constraint conditions around CRTS Ⅰ type ballastless track embedded sleepers,the structural characteristics of base plate and track bed plate,the shrinkage deformation and shrinkage stress of the structure were balanced and improved,and the multi-field coupling cracking risk model of"hydration-temperature-humidity-constraint-stress"was established.The methods of multi-field coupling model,crack risk pre-control,crack control measures,real-time in-situ monitoring and dynamic measures were combined to solve the concrete cracking disease of CRTS Ⅰ type double block ballastless track and ensure the construction quality of concrete structure.
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